ORIGINAL: seanreit

Look, any of these oils will work. The question becomes, what will your combustion chamber look like at it's next service level. Coking (google it) can and will happen with almost any of these oils, including some of the kerosenes we use.

Now, what does coking do? Coking will restrict flow of fuel in your combustion chamber tubes. It can also dirupt the flow of air in and around your combustion chamber.

How much coking does it take to cause problems? Don't know. But eventually with a coking problem you could experiance a flame out. I have never heard of this happening. NEVER. But it could.

A turbine manufacturer that sees significant coking is going to want to replace the combustion chamber rather than fix the problem because the labor to get the coking out would be A LOT! Not that it couldn't be scraped out, it could. It's just burnt crap.

How much is a comb chamber, I don't know, but about $300.00.

Does a turbine manuf know what oil you are using. NO! But with significant coking, they might ask you. How you answer? Does it really matter? If you are saving on oil over the life of an engine, and you replace the comb chamber once or twice, which is the best way to spend your money? What's more convenient.

Make up your own minds and move on.

Hell, you can use 2 cycle oil, and all the above applies.

It's a lubricant for the bearings that some of it gets burned as well. The residue left is the coking.

ANY QUESTIONS?

Go Fly!